Sky support for flexbox justify content

sky/examples/lib/solid_color_box.dart

Index: sky/examples/lib/solid_color_box.dart
diff --git a/sky/examples/lib/solid_color_box.dart b/sky/examples/lib/solid_color_box.dart
index 4608f4b6b334d766e8f026c92fa315e946ca7dc0..ae008e39316cf316b631115fc3329847b25a04f9 100644
--- a/sky/examples/lib/solid_color_box.dart
+++ b/sky/examples/lib/solid_color_box.dart
@@ -9,7 +9,7 @@ class RenderSolidColorBox extends RenderDecoratedBox {
   final Size desiredSize;
   final Color backgroundColor;
 
-  RenderSolidColorBox(Color backgroundColor, { this.desiredSize: const Size.infinite() })
+  RenderSolidColorBox(Color backgroundColor, { this.desiredSize: Size.infinite })
       : backgroundColor = backgroundColor,
         super(decoration: new BoxDecoration(backgroundColor: backgroundColor));